Matthew 24:36

But of that day and hour knoweth no one, not even the angels of heaven, neither the Son, but the Father only.

Note again the contrast between "that day" of this place and "these things" spoken earlier, indicating that Christ clearly differentiated between the immediate and remote fulfillment of this great prophecy. The Arian heresy was founded, in part, upon these words of Christ to the effect that he did not know the day and hour of the judgment. Aside from the uncertainty with regard to these words forming a part of the original text (see the margin of the ASV), it should be remembered that there were many things Christ did not choose to know during the days of his fleshly limitation. It was no part of his divine mission to impart knowledge of any category unrelated to man's salvation from sin. The words, therefore, do not imply any limitation whatever upon his godhead or divinity. A due regard to this verse would have prevented many religious teachers throughout the ages from making fools of themselves in predicting the time of the second advent. The precise day and hour of the judgment and destruction of the ungodly is unknown and unknowable by men. However, God DOES KNOW the day and the hour. Why? Because God has appointed it (Acts 17:31).